Antivibration device for use on wheeled vehicles.



E. V. HARTFORD. ANTIVIBRATION DEVICE FOR USE ON WHEELED VEHICLES.

APPLICATION FILED FBB.23,1907.

1,095,571. Patented May 5, 1914.

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E. V. HARTFORD.

ANTIVIBRATION DEVICE FOR USE ON WHEELED VEHICLES.

APPLIG ION FILED rm. 2a, 1907.

1,095,571 Patented May 5, 1914.

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"UNITED sTA'ras PATENT OFFICE.

EDWARD V. HARTFORD, OF NEW YORK. N. Y.

AN'IIVIBRATION DEVICE FOR USE ON WHEELED VEHICLES.

72) all 10/: cm it may concern:

Be it known that I, EDWARD V. H481- roao, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Antivibration Devices for Use on Wheeled Vehicles, of which the following is a full, clear, and exact specification.

My invention relates to anti-vibration devices for use on wheeled vehicles employing suspension springs between the body and the running gear for the purpose of retardlng the reaction of such springs when they are suddenly compressed or expanded by the passage of the vehicle over inequalities in the surface of the road, and which thereby prevent the shocks and jolts that the vehicle I 1 body would otherwise be subject to. In the use of such vehicles on ordinary roads the anti-vibration device may be adjusted to exert a certain retarding eifeot upon the reaction of the vehicle springs, which is suflicient for the usual inequallties of the road. It occasionally happens, however, that an unusually rough stretch of road is encountered, or a sudden, severe inequality of the road may be met with, which will require a much greater retardln effect upon the springs to prevent the s ock to the vehicle body following the reaction of the springs.

The object of my invention is to enable out leaving his seat or sto ping the vehicle, to control and regulate t e resistance presented by the anti-vibration device to the action of the springs, whereby, in ,case such unusually rough stretch of road is encountered, or a severe inequality of the road is suddenly met with, he may at once increase such resistance so that the samd will be effectual to retard the unusual action or reaction of the springs, which would otherwise Specification of Letters Patent.

Application filed February 23, 1907.

follow the passage over such roughness or i obstruction, and whereb after the same has I been assed, the anti-v1 ration device may, if desired, be as readily restored to its normal condition, whereby it presents a proper resistance to the reaction of the springs to the ordinary inequalities of the road. l My invention consists in providing, such anti vibration device with means whereby the resistance to the reaction ot'the springrhg inayjlie increased or diminished at will, and in connecting such adjusting means with n l Patented May 5, 1914. Serial ,No. 358,814.

suitable controlling device adjacent to and under the control ofthe driver or chauffeur, and it also consists of other combinations and details hereinafter more fully pointed out and illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a vehicle containing my invention, parts of the vehlcle being omitted for clearness of illustratlon; Fig. 2 is a detail side view (if the anti-vibration device and part of the con trolling device; Fig. 3 is an end view of the same, partly in section; Fig. 4 is a plan view of the device applied to a vehicle, parts of which are omitted; and Fig. 5 is a sectional view of the body of the anti-vibration device showing the manner of assembling and attaching the arts.

In the drawings I have illustrated my invention attached to an automobile, to which it is particularly applicable. It may, however, be applied to other wheeled vehicles as well.

The body 1 of the vehicle is suspended through side bars 2, upon springs 3, which are here shown as semi-elliptic. springs are held upon axles 4 by means of strap bolts 5, which pass over plate 6 upon the spring, and the lower ends of which pass through connecting plate 7, under axle 4, in which position they are held by nuts 8 tapped on their lower ends, and screwing up against connecting plate 7. Wheels 44 are carried as usual by axles 4. Projecting upwardly from the u or surface of plate 6 is a lug 9, upon which is pivotally mounted an 11 right link or connecting arm 10 by headed olt 11, seas to swing thereon. Pivotally attached to link 10'by headed bolt 12 is arm 13, which. at its opposite end is bifurcated, forming two semi-circular friction bands 14, 15, which terminate in horizontal lugs or ears 16, 1?. Friction bands 14. 15, are arranged peripherally with respect to the body or resistanco-creating per- These lion ofthe anti-vibration device, and are in immediate contact with a strap or band 18 of friction material, suchas ieather, vulcanized fiber, etc, which is lhountedipwiph erally upon the floor of a rectangular cha nnel formed in the periphery of friction disk- 19, by the integral annular flange 20, and

the outer edge of circular-face p1ate'21i After the parts 18, 14, and 15 have insertcd in placc,the body portion is assem- 17, and

bled and attached by headed bolts 2&1, winch I pass through holes in friction dish 19 and side fI-auiesQ, which is-usuully faced with 1 tion. device are as follows: Lugs or ears 16,

17 are formed with notches :26, upon each side of which are received the sides of an approximately U-shapc-d strap or buckle 27, through a tapped opening in the bottom of which passes a threaded bolt the inner end of which engages the under side of? lug 27. The sides of buckle 27 are connected at; their upper ends by a pin or rivet 29, upon which is mounted a cam 30 so as to rotate thereon. This cam is formed upon the end of cam arm 31, which is pivotally connected at 32 to a connecting rod the forward end of which is pivotally connected at to an upright hand lever 35, which at its lower end is fixed upon shaft 36, held in place by straps 37 secured to the under side of side bars 2. Hand lever 35 may be held in any position to which it may be adjusted by any suitable locking device, as, for instance,'l.)y pawl 38, which engages the teeth of segmenm1 rack 39, and is controlled by handle 40, to which it is connected by connecting rod 41. The pawl 38 is spring-pressed against the teeth of rack 39 in well known manner Shaft 36 extends to the opposite side of the vehicle, Where it is connected by arm 42 to a set of devices the duplicates of those already described.

I have shown one mode of carrying my invention into eflcct, but other nzodes may be employed, as my invention does not reside in the particular mode illustrated by me of controlling the adjustment upon the anti vibration device, nor in the particular mode of adjusting the same, nor in other details described, and I desire to be understood that other equivalent means may be employed to perform these functions.

It will be understood, of course, that the 5 device of the present invention can be ema ployed to throw the anti-vibration device almost entirely out of operation, so that very little, if any, retarding action will he exercised upon the springs in passing over comparatively smooth roads.

The words mannally-operable, where used in the claims, are intended to designate rovides an, adjustment for buckle ass-hit o; springs ning gsi'ir, rotating, vices for the vchicl adjusting the retardn all i adjusting the reta ding tie n1 mounted on the whi h ho tions between the te m and operating the can,

24 In tiolllllmw a be running int erposed bet oing gear, an an ing ll lilil)Q-Y and provided witi. forested member e with sa d suspensio n ember being in so i cgagement. with said fr we said rigid member, meaio 3%11' Gated member to adjust t ance between said vmovable members to s, piedcternii tard the relative mo 95cm and said bod and imuiuail'v said bodv and g and o; tble it ciliusti ing moons v resistl ancc bcvvecn 'i f rented 90 members, to n in scillai tor movements I 1 run hing gear under 0 A eiiec- "\T in licence cl 3 In combinati wng a 9i hotly, running 5 means intr-zgmsetl Tech runhing gear. on ring a split friction in 1 lugs, a yoltc engaging t bolt .10 extending throu iv gaging one of said lug -13 =11 said E yoke and engag 3 I sad lugs, 1 and means for ogx attn: 9" i In tes anon 1 t "lijO set 10 Ill. hand ii: the r =1": ribing l i aft kit-l). 

